Cita APA

Goeldner, C. R., & Ritchie, J. R. B. (2015). Tourism: Principles, practices, philosophies. Wiley.

Chicago Style Citation

Goeldner, Charles R., i J R Brent Ritchie. Tourism: Principles, Practices, Philosophies. Wiley, 2015.

Cita MLA

Goeldner, Charles R., i J R Brent Ritchie. Tourism: Principles, Practices, Philosophies. Wiley, 2015.

Atenció: Aquestes cites poden no estar 100% correctes.